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-rwxr-xr-xutil/gitconfig/commit-msg122
1 files changed, 69 insertions, 53 deletions
diff --git a/util/gitconfig/commit-msg b/util/gitconfig/commit-msg
index 548f373522..212ffb1738 100755
--- a/util/gitconfig/commit-msg
+++ b/util/gitconfig/commit-msg
@@ -49,7 +49,25 @@ add_ChangeId() {
# Solaris AWK is just too broken
AWK=/usr/xpg4/bin/awk
fi
+
+ # How this works:
+ # - parse the commit message as (textLine+ blankLine*)*
+ # - assume textLine+ to be a footer until proven otherwise
+ # - exception: the first block is not footer (as it is the title)
+ # - read textLine+ into a variable
+ # - then count blankLines
+ # - once the next textLine appears, print textLine+ blankLine* as these
+ # aren't footer
+ # - in END, the last textLine+ block is available for footer parsing
$AWK '
+ BEGIN {
+ # while we start with the assumption that textLine+
+ # is a footer, the first block is not.
+ isFooter = 0
+ footerComment = 0
+ blankLines = 0
+ }
+
# Skip lines starting with "#" without any spaces before it.
/^#/ { next }
@@ -57,80 +75,78 @@ add_ChangeId() {
# up to the end of the file, assuming it is only patch data.
# If more than one line before the diff was empty, strip all but one.
/^diff --git a/ {
- if (blankLines > 1) {
- blankLines = 1
- }
+ blankLines = 0
while (getline) { }
next
}
- # Handle comments and continuations in tags ([foo: bar] etc)
- (caught == 1) && /^[ []/ {
- if (lines != "") {
- lines = lines "\n"
- }
- lines = lines $0
+ # Count blank lines outside footer comments
+ /^$/ && (footerComment == 0) {
+ blankLines++
next
}
- # Handle normal lines (ie. not starting with some tag like "Signed-off-by:").
- # If normal text appears after tags were "caught", handle them as normal text, too.
- # Also count blank lines in blankLines.
- !/^[a-zA-Z0-9-]+:/ || /^[a-zA-Z0-9-]+:\/\// {
- if ($0 == "") {
- blankLines++
- next
- } else {
- for (i = 0; i < blankLines; i++) {
- print ""
- }
- blankLines = 0
- }
- if (caught == 1) {
- caught = 0
- print lines
- lines = ""
+ # Catch footer comment
+ /^\[[a-zA-Z0-9-]+:/ && (isFooter == 1) {
+ footerComment = 1
+ }
+
+ /]$/ && (footerComment == 1) {
+ footerComment = 2
+ }
+
+ # We have a non-blank line after blank lines. Handle this.
+ (blankLines > 0) {
+ print lines
+ for (i = 0; i < blankLines; i++) {
+ print ""
}
- print $0
- next
+
+ lines = ""
+ blankLines = 0
+ isFooter = 1
+ footerComment = 0
+ }
+
+ # Detect that the current block is not the footer
+ (footerComment == 0) && (!/^\[?[a-zA-Z0-9-]+:/ || /^[a-zA-Z0-9-]+:\/\//) {
+ isFooter = 0
}
- # Handle tags. They are "caught" and collected in the "lines" variable
{
- caught = 1
+ # We need this information about the current last comment line
+ if (footerComment == 2) {
+ footerComment = 0
+ }
if (lines != "") {
lines = lines "\n";
}
lines = lines $0
}
- # Tag handling:
- # If last line before tags was not blank, there were no tags.
- # In that case, print everything, plus a blank line, followed by Change-Id.
- # Otherwise there were tags. Look for the right place to inject Change-Id,
- # by considering CHANGE_ID_AFTER. Tags listed in it (case insensitive) come first,
+ # Footer handling:
+ # If the last block is considered a footer, splice in the Change-Id at the
+ # right place.
+ # Look for the right place to inject Change-Id by considering
+ # CHANGE_ID_AFTER. Keys listed in it (case insensitive) come first,
# then Change-Id, then everything else (eg. Signed-off-by:).
+ #
+ # Otherwise just print the last block, a new line and the Change-Id as a
+ # block of its own.
END {
unprinted = 1
- if (blankLines == 0) {
- if (lines == "") {
- print ""
- } else {
- print lines "\n"
- }
- } else {
- for (i = 0; i < blankLines; i++) {
- print ""
- }
- changeIdAfter = "^(" tolower("'"$CHANGE_ID_AFTER"'") "):"
- numlines = split(lines, footer, "\n")
- for (line = 1; line <= numlines; line++) {
- if (unprinted && match(tolower(footer[line]), changeIdAfter) != 1) {
- unprinted = 0
- print "Change-Id: I'"$id"'"
- }
- print footer[line]
+ if (isFooter == 0) {
+ print lines "\n"
+ lines = ""
+ }
+ changeIdAfter = "^(" tolower("'"$CHANGE_ID_AFTER"'") "):"
+ numlines = split(lines, footer, "\n")
+ for (line = 1; line <= numlines; line++) {
+ if (unprinted && match(tolower(footer[line]), changeIdAfter) != 1) {
+ unprinted = 0
+ print "Change-Id: I'"$id"'"
}
+ print footer[line]
}
if (unprinted) {
print "Change-Id: I'"$id"'"